Published March 29, 1990
| Version v1
Journal article
Neutrino counting at the Z peak in extended electroweak models
Description
The consequences of mixing between the standard model Z and a possible extra neutral gauge boson, Z', on neutrino counting at the Z peak are investigated. Our results are presented in the number of light neutrino generations (Nν), and total Z width (Γz) plane. We find that a large range of values are possible, including the case where one of these quantities takes on its three-generation SM value while the other does not. Z-Z' mixing does not appear to be able to conceal a fourth generation of light neutrinos. (orig.)
Additional details
Publishing Information
- Journal Title
- Physics Letters, (Section) B
- Journal Volume
- 238
- Journal Issue
- 1
- Series
- Phys. Lett., B.
- Journal Page Range
- 99-102
- ISSN
- 0370-2693
- CODEN
- PYLBA
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- Netherlands
- INIS RN
- 21051486
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- BRANCHING RATIO; CONFIGURATION MIXING; EIGENSTATES; IRREDUCIBLE REPRESENTATIONS; LAGRANGIAN FIELD THEORY; LEPTONIC DECAY; MASS FORMULAE; MATRICES; MULTIPLICITY; NEUTRINOS; PARTICLE MULTIPLETS; PARTICLE WIDTHS; QUANTUM FLAVORDYNAMICS; REST MASS; SU-2 GROUPS; UNIFIED GAUGE MODELS; WEAK HADRONIC DECAY; WEAK PARTICLE DECAY; Z NEUTRAL BOSONS
- Descriptors DEC
- BASIC INTERACTIONS; BOSONS; DECAY; ELEMENTARY PARTICLES; FERMIONS; FIELD THEORIES; INTERACTIONS; INTERMEDIATE BOSONS; INTERMEDIATE VECTOR BOSONS; LEPTONS; LIE GROUPS; MASS; MASSLESS PARTICLES; MATHEMATICAL MODELS; MULTIPLETS; PARTICLE DECAY; PARTICLE MODELS; PARTICLE PROPERTIES; QUANTUM FIELD THEORY; SU GROUPS; SYMMETRY GROUPS; WEAK INTERACTIONS
Optional Information
- Contract/Grant/Project number
- Contract DE-AC02-76ER00881